Fix #775 - Run eslint.js via node on Windows for eslint --fix

autoload/ale/fixers/eslint.vim

@@ -28,8 +28,16 @@ function! ale#fixers#eslint#Fix(buffer) abort
         return 0
     endif
 
+    if ale#Has('win32') && l:executable =~? 'eslint\.js$'
+        " For Windows, if we detect an eslint.js script, we need to execute
+        " it with node, or the file can be opened with a text editor.
+        let l:head = 'node ' . ale#Escape(l:executable)
+    else
+        let l:head = ale#Escape(l:executable)
+    endif
+
     return {
-    \   'command': ale#Escape(l:executable)
+    \   'command': l:head
     \       . ' --config ' . ale#Escape(l:config)
     \       . ' --fix %t',
     \   'read_temporary_file': 1,